Pneumatic tool.



G. A. FAESSLER. PNEUMATIC TOOL. APPLICATION rI'LnD 11110.15, 1911.

1,054,343, Patented Feb. 25, 1913. f "5 Witnes 1 cnaarns A. raessnsn; orserrate, NEW YORK,

assiqn'oa ro JOHN ziu'rrenroaran, or. nurraro, NEW .Yoax.

PNEUMATIC 'DQOL.

flpeolfloatlon of Letters Patent. Patented Feb. 25,1913.

Application and December. 15,.1911. Serial no, eeaove As the generaloperation ofa pneumatic.- tool is familiar to "those skilltdin the art,I have deemed it unnecessary to illustrate and i. enter into a detaileddescription of the dis.-' tribution-valve, and the tool-c linder andto-Tom-1 wnom it may concern:

Be it known that I, Cnannns A, FAESSLER, a citizen of the United States,and resident oflflutlalo, in the county of Erie and State of New York,have invented certain new and useful Improvements in -Pneumatio Tools,of which the following is a specification. 1

My invention'relates to pneumatic tools,

and more particularly to the controlling-.

valve and its adjuncts.

The primary object of this invention is the production of a riveting,chi ping, or

other pneumatic tool, in which vi ration is reduced to the minimum, andwhich is simple in construction, quick in fiction, and

easily controlled. p Other objects are to provide a double closureagainst the leakage of air around the controlling-valve; toso constructsaid valve that the air passes through the valvecasing at a right-angleto the direction of movement of said valve; to provide the valve with aconical or tapered portion against which the motive agent acts to aid inopeningfthehvalve; to arrange the parts to opposite sides of the valveout,o'f line so thatuthe motive-agent will first ,act to depress thevalve betore it can enter the passa' e leading to the tool-cylinder; andto ot orwise improve on pneumatic-tools as will be noted hereinafter-tTo these ends the invention consists in the construction,arrangement,;and combination of parts to be hereinafter described andparticularly pointed out in the subjoined claims.

In the drawings, Figure 1 is aside elevation of a tool handle embodyingmy invention Fig. 2 is a" front elevation of the same. Fig. 3 is alongitudinal section, taken on line 33, Fig. 2. Fig. 4 is a longitudinalsection, taken on line 4-4, Fig. 1. Fig. :3 is a transverse sectiontaken on line 5-5, Fig. 3.

Referring now to the drawings in detail, corresponding letters ofreference refer to corresponding parts in the several figures.

A designates the handle containing the controlling-valve B. The lowerportion of the handle is hollow and preferably cylindrical, as at C, toreceive the usual distribution-valve, or analogous-device; and it isinternally threaded, as at c, to receive a tool cylinder.

its contained parts, particulary since an invention is to be used inconnection wit the working parts of any. of'the various forms ofpneumatic-tools.v

The handle has ahead-grasp. D whichiisos 1 in the form of a. curved. clindrical cross- 4 bar located above the ho owv cylindrical portion Cand separated from'the-latter by an intervening epacec through which thefingers of the operator may be passed, thus allowing him toconveniently; take hold of said hand-grasp; said cross-bar beingconnected, at one end to the cylindricaliportion C by a reducednnder-curved portion d,.and-

at the other endby a substantiall cylindii- 76 cal boss E arrangedarallel' wit said cylindrical portion an serving as. a valve-- .casing.The latter has a-cylindrical bore 0 which is closed. at the. bottom and.open at its upper end; said upper'l'enfl being inter- 80 I nallythreaded for connect on with the threaded portion f of abushingFLvvIiichis inserted into the valve-chamber and ext nds to within a shortdistance from-'itsbottom. I

The upper end of said bushing'isenlarged 5 and preferably madehexagonal,-as at G, so that a wrench mayc be applied. for properly andsecurely. screwing it. into place and for convenientl removing- Ethelsame. Said bushing may e'saidrto; f ojrmrllfl part of the valve-chamber,'andi-if desired may be omitted entirely,.bu.t I'hove fou d, it morepracticable to use the' samepa'shn accurate lit between it anditsnontained parts can be obtained. more easily than 95.

would be possible by lacing SilidzPlll'tS directly into the cylin rieal-038' E: Mord over, the sleeve maybe made of'steel. which is less liableto wear under the action 'of the controlling-valve and by time providina 1 .0 steel-bushing for the valveohalnbenfl. e

handle can be made f br e suitable metal. a

which may be screwed the ttin of a flexihie-boss leading to the supplyoaths-mg! five-agent, and'connecting the ihollow-oylr W'W' inderC withthe interior of the-hossE,;

in the bushing P int a passage H through which the motive agent is ledto the distnbution-valve usually em-- ployed in tools of this kindvThebushing F has an inlet port I Lwhich registers with 5 the inlet-openinge in the valve-casing, and an outlet-port J out; of direct line withsaidinlet-pint and in registration with the -passage Thecontrolling valve Bis movable ithand is machined to fit closely therein.,. Said valvecomprising a body-portion K, a stem is, a conical portion In betweensaid stem and body-portion, and a stud lc at 1 its inner end. Within thebushinQ'ofthevalvechan *er is a sleeve L having ajcentlral bore through.which the stem of the'valve' passes and from the outer end .of 'whichsaid 'ster'ri projects. Said sleevelias'the inner end of its bore flaredor beveled to form a valve-seat Z for the'conical portion of the valve.Sleeve L is prefer ably provided with an enlarged head of hexagonal orother convenient shape for ap- .plyinga'wrench; and beneath said head ithas a: threaded'portion I which fits into the internally: threaded upperend ofthe bush-k. ing. "Between the bottom of the valvechan'iber "andthebo'dy of the valve, a'coil springM iinterposed which has its upperand surrounding the stud 70 whereby it is centered toassure free actionand preventfcrampin g, "Said spring acts to-inaintain the valve in itsclosed positiomand in. order to'openthesame with a view of ac 36tuatinpl' thefw'orkingparts ofthetool; said valve'iniist. be opened by'manual efiortp This is accomplished by means of a lever N .movablewithin a'groove O in the hand grasp of thejhandle. Said lever is secured40 within said'g'roove'by means of a pivot-pin n passing thronghit atoneentl and through openingsin the hand-grasp; the lever ex-- tendinginthe rear of said pivot-pin, as at n and havi'ng its lowe'redge at thispoint -15 serving as a stopto limit theupward-movement of its forwardfree end, in consequence of which the-outward movement of the valvisjalso lirnited,"oivi'ng to the l ver bearing-with its free end againstthe an "acting endof the stem of said valvetuf-LZ'? 1' 5) v v B{constructing-the valve-operatin lever in t'd-in-annr described, itextends iiangthwise of th flhand-grasp and can most con-' venient heoperated by pressure ofthe hand) nsteads-of the thumb'as has heretoforeb'e'en' the practice; said action being I more e'onvenient and not solike! to tire ."theoperatoru Moreover, considera le more pressure'ca'nbe exerted with tbe'handthan by the use o'f the 'thiimb alone andwithmuchless efi'ort; and owing to the inlet and ont-let ports of thevalve-chamber'beirig ar- "rziiige'd out oiaccnrate registratiom-depresB5 sion of said operating lever causes the valve :of the body-portionwith a tapered or conical portion, and supplying a valve -seatoutlet-port, and a valve movable within said chamber, saidvalve and theports of said chamber being so related that during the .rnovement'ofsaid valve the ii-utlet-port is 1' lct-port,- and a vaive movabie insaid chamber to control. the p assageei the motiveport, said. portsbeing arranged out of line,

to be moved inward against the action of the spring M, resultin in apartial opening" of the inlet port whi e the outlet-port is stillclosed, thus admitting the motive-agent into the chamber between theconical portion of ti the valve and its seat; the motiveaigent actinginstantly against said conical portin to depress the valve and aid theoperator in the controlling of the'tool. Owing to the motive-agent beingunder considerable prosure, the valve act-s quicker and more posh tivethan could be done by manual effort alone.

By providing the valve atthe upper end so fully embodied within thescope of my in- I vention may be resorted to; and i, do not wish to belimited to the exact construction hereinshown and described.

I claim, 1. In a pneumatic-tool, the combination of a handle having a oind ical valve chamber provided witha inngie inlehpor't and anoutlet-port, said ports loeingarranged out of line, and a valvereciprocal in said chamber and acting to partially open the inlet-portbefore opening the outiebport.

2. Ina pneumatic-toohthe combination of a handle avlng acylindncalwalvechamber provided with a single inlet-port and'anr closed while theinlet-port is partially opened.

3. In a pneuniaiioto'ol, the combination of adhan'dle having avalve-chamber providcd with a single inlet port and an outagenttherethrough, said-valve and the ports of said chamber being so relatedthat duringthe movement of said valve the inletport is artially openedwhile the outletport is c ose'd.

4. In a pneumatic-tool, the combination of a-handle having avalve-chamber pro vided with a single inlet-port and anoutletand a valvereciprocal in said chamber and acting to close the ont-letrport tartan:entirely closing the inlet-port.

5,..111 apnenmatiotoohthe combination oi a"hend-grasp. a valve -ehamherhaving; a.

spring-pressure to open said ports, said ports and the valve being soarranged that one port is entirely opened before the other. 6. In apneumatic-tool, the combination of a hand-grasp, a valve-chamber havinga single inlet-port and an outlet-port, a valve reci rocal in saidchamber and spring-control ed to normally close said ports, and meansfor". anuall'y counteracting the springpressure. to open said ports,said ports and thefvalve being so arranged that one port is eritirelyclosed before the other.

7. In awpneumatic-tool, the combination of a hand-grasp, a valve-chamberhaving a single inlet-port and an outlet-porn a valve movable in saidchamber and spring-pressed to normally close said p.orts,- and means formanually actuating said valve against the spring-pressure to cause saidports to be opened; said valve being so arranged that when theinlet-port is partially opened, the motive-agent aids in the opening ofsaid valve.

8. In a pneumatic-tool, the combination of a valve-chamber havinganinlebport and an outlet-port at diametrically opposite points arrangedslightly outof line and a beveled valve-scat, a valve normally closingsaid ports and havin a stem protrudin" from one end .of'saidc amber anda conica portion, normally seated a ainst said valveseat to preventleakage o the motive fluid along said stem, and means to manuallyactuate said valve to cause it to move from "said seat and to open saidports, said inletport being artly uncovered during the movement 0. saidvalve before the latter acts to uncover the outlet-port.

9.'In .a neumatic-tool, the combination of a cylint rical valve-chamberhaving an inletport and an outlet-port at diametrically o-pposite pointsand a beveled valvescat, said ports being arranged so that one is closerto the outer end of said .chamber than the other, a valve having aconical portion and being spring-pressed to close said ports, and toseat said conical portion against said valve-seat, and means to movesaid valve toward. and from said valve-seat; said inlet-port beingartially uncovered during the movement ot said valve from said seatbefore uncovering the outlet-port and the latter being entirely coveredduring the movement of ,the valve toward said seat before entirelycovering the inlet-port.

10.'In a nc'umatic-tool, the combination of a va'lve ciiamber having aninlet-port and an outlet-port, a spring-pressed valve having a conicalportion, a'nd means to depress the valve manually; said conical portionof the Valve being brought into line with the :let and outletort's, a seeve fitte inlet-port before the outlet-port is opened 'so that themotive-agent enters the valvechamber and is confined the valve.

11. In a pneumatic-tool, the combination of a handle having an integralvalve-casing provided with a single inlet-opening and a passageextending from the interior' o'f said casing through the handle, abushing in Said casing havin an inlet-port in registration to aid indepressing with said in et-opening and an outlet-port in registrationwith said passage; a spring.- pressed valve reciprocal in said bushingand normally closing said ports, and means whereby said valve may [bemanually actuated to open said ports the'ports of said bushing being outof line sothat'during movement ofsaid valve in one directi'ou'lheinlet-port is b ing opened before the outlet port. v y

12. In a pneumatic-tool, the combination of a handle having an integralvalve-casing provided with a single inlet-opening and a passageextending from the interior of said casingthrough the handle, abushing'in sai l casing hav'in an inlet-port in' reg1stration' with saidinlet-mooning and an outlet-pout in registration with saldi passe e,a-sprin pressed valve reciprocalin said jushing an normally closin saidarts, and -means whereby said va vc maye' manually actuated' to opensaid ports; "the portsof said bushing being out of line sothat duringmovement of said valve in one direction the inlet-port is being openedbefore the outlet-port and during movement of said valve in its oppositedirection the outlet-port is closed be ore the inlebport.

y 13. In a pneumatic-tool, the combination of a handle having anintegral valve-casing provided with a single inlet-opening and a passageextending from the interior of said casing through the handle, a bushingin said casing having an inlet-port in r 'stration with said passage,aspring-prcsse valve reciprocal in said bushing and normally closing"said ports, and means whereby said valve may be manuall actuated to opensaid ports; the ports 0 said-bushing being out of line so that theoutlet-portwill he closed before the inlet-port.

14. In a pneumatic-tool, the combination of aval've-chamher havinabushin endinin one end of said bus ing with its inner end acting as avalve-seat, a valve reciprocal insaid bushing and normally seatedagainst said valve-seat and'closing said inletand outlet=ports, andmeans to manually unseat said valve and also causesaid ports to beopened. I y

15. In a pneumatic-tool, the combination of a valve-casing havingan'inlebopening l. ing having an i let port in registrtion with sanl Iinlet-Opening, and an utletport in registration .ivith said passage, asleeve removable in said bushing and-haying its in-' {6 nei vendbeveled,and a spring-pressed valve we normally. closing said 'ports and having al I .conicalpox tion normally seated against said x-nvalve-seat j and astem passed through said sleeve and protruding from the enter end 10,thereof.\ 7

1 6. In a pneumaticst obl, ,t-he comb in afizion .o fva valve-easingClosed at one end and 1m h ,i'ng aninlet-0pening and a passage for leaing the motive-agent to the workingarts 7 15 of the tool, a bush ngthreaded into sai' cas- 3,5, trudiiig fromlth'enouter endthereof, end a1 coil-spring-wit hin the bushing between said -;;valve and the closedend-oiisaid casing.

17 .--In a pneunmtig-tool, the mmbination r of a hendlehavinganintegralvalye-chamm be; providedfwith an inlet-opening and anout-lebopening, albushin'g within said valve ber provided with an inletopening outlet openmg, said openings being;

chemberfhm ing an inlebporl; amid m1 bui- 1et=p0rt 'in registrationwith. said? inlet end outlet-openings, a sleeve entering one eml emfsaid bushing, aj' valve -eciprocal within seiii bushing, a spring actingagainst the imam end of said valveyand means whereby said va'hie may bemanually depressed m CGIHHLEX aet th e pressure of semi springs,

18. Ina pneumatic tool," the combin'etioii of a handle having anintegral valve chemand 2m slightly out. of alinement,-- a bushing Withinsaid vsilye chamber having an inlet pert anfi an outlet port inregistration with seial inlet and outlet openings, a sleeve entering oneend of said bushing, a valve reeipmcal with in said bushing and et'rangein open ancl close both the inlet and. outlet ports e sparing actingagainst the inner end of said valve,

and means whereby said valve may be menually depressed t0 euntergxct thepressure ef said spring;

In testimony whereof, I have th isdey of December, IQlL-aEXed'mysignature in the presence of two subscribing Witnesses,

GHARLES A. FAESEfiLER,

Witnesses:

JOHN B. PORTER, Y

D. H HARPER.

